<template>    
    <el-container class="home-container">        
        
        <!-- 头部区域 -->
        <el-header>
            <div>
            <img src="../assets/logo.png" alt="">
            <span>电商后台管理系统</span>
            </div>
            <el-button type="info" @click="logout">退出</el-button>
        </el-header>
            <!-- 主体区 -->
            <el-container>
                <!-- 侧边栏 -->
                <el-aside :width="isCollapse ? '64px' : '200px'">
                    <div class="toggle-button" @click="toggleCollapse">|||</div>
                    <!-- 侧边栏菜单区域 -->
                    <el-menu background-color="#333744" text-color="#fff"
                        active-text-color="#409EFF" unique-opened="true" :collapse="isCollapse"
                        :collapse-transition="false" router :default-active="activePath">
                    <!-- 一级菜单 -->
                    <el-submenu :index="item.id + '' "  v-for="item in menulist" :key="item.id"> 
                        <!-- 一级菜单的模板 -->
                        <template slot="title">
                            <!-- 图标 -->
                            <i :class="iocnsObj[item.id]"></i>
                            <!-- 文本 -->
                            <span>{{item.authName}}</span>
                        </template>

                        <!-- 二级菜单  -->
                        <el-menu-item :index="'/'+subItem.path"  v-for="subItem in item.children" 
                        :key="subItem.id" @click="saveNavState('/'+item.path)">
                            <!-- 图标 -->
                            <i class="el-icon-menu"></i>
                            <!-- 文本 -->
                            <span>{{subItem.authName}}</span>
                        </el-menu-item>
                    </el-submenu>                  
                    </el-menu>
                </el-aside>
                <!-- 右主体 -->
                <el-main>
                    
                <!-- <el-button type="primary" :loading="true">加载中</el-button> -->
                    <!-- 路由占位符 -->
                    <router-view></router-view>
                </el-main>
            </el-container>
    </el-container>
</template>

<script>
export default {
    data() {
        return {
            //左侧菜单数据
            menulist: [],
            iocnsObj: {
                '125': 'el-icon-user',
                '103': 'el-icon-s-check',
                '101': 'el-icon-s-goods',
                '102': 'el-icon-s-claim',
                '145': 'el-icon-s-data'
            },
            isCollapse: false,     
            activePath: '',   
        }
    },
    created() {
        this.getMenuList()
        this.activePath = window.sessionStorage.setItem('activePath')
    },
    methods: {
        logout() {
            window.sessionStorage.clear();
            this.$router.push('/login');
        },
    //获取所有的菜单
        async getMenuList(){
            const { data: res } = await this.$http.get('menus')
            if(res.meta.status!==200) return this.$message.console.error(res.meta.msg)
            this.menulist = res.data
            console.log(res)
        },
        //切换菜单的折叠和展开
        toggleCollapse(){
            this.isCollapse = !this.isCollapse
        },
        //保存链接激活状态
        saveNavState(activePath){
            window.sessionStorage.setItem('activePath',activePath)
        }
    }
}
</script>

<style lang="less" scoped>
.home-container{
    height: 100%;
}
.el-header{
    background-color: #373d41;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: white;
}
.el-header div{
    display: flex;
    justify-items: space-between;
    align-items: center;
}
.el-header img{
    height: 65px;
    
}
.el-header span{
    //font-weight: 100px;
    font-size: 20px;    
    margin-left: 15px;
}
.el-aside{
    background-color: #333744;
    .el-menu{
        border-right: 0;
    }
}
.el-main{
    background-color: #eaedf1;
}
.toggle-button{
    background-color: #4a5064;
    font-size: 10px;
    line-height: 24px;
    color: #fff;
    text-align: center;
    letter-spacing: 0.2em;
    cursor: pointer;
}
</style>